Zueva M V, Tsapenko I V, Chernookova V A, Verigo E N, Rozhentsov V V, 2006, "Temporal visual resolution in normal and pathological oculo-ocular reactions after severe ocular trauma" Perception 35 ECVP Abstract Supplement
Temporal visual resolution in normal and pathological oculo-ocular reactions after severe ocular trauma
M V Zueva, I V Tsapenko, V A Chernookova, E N Verigo, V V Rozhentsov
Our object was to determine alterations of temporal resolution in fellow eyes after a severe ocular trauma. We tested temporal visual properties of fellow eyes in thirty healthy subjects and seventy-nine patients who have undergone severe ocular trauma--eleven with sympathetic ophthalmia (SO)--by using two psychophysical methods: 'CFF-inertia' (ICFF) and 'differential CFF' (DCFF). ICFF was used to determine a threshold time of separate colour stimulus sensation in each flash clip--the time of inertia (Ti). DCFF was used to determine a minimal time difference between two clips of double stimuli of different frequencies (D). We found a significant increase of D for blue and green stimuli and of Ti for blue stimuli. More pronounced disturbances were characteristic in temporal resolution of blue light in the patients with SO. The lowering of temporal integration of S-cone pathways may be related to reinforcement of the inhibition process in higher nervous system as a reflection of general adaptation syndrome. We conclude that specific changes in inertness and differential flicker sensitivity of visual system in contralateral eyes after severe ocular trauma can distinguish a normal fellow eye reaction from a pathological one and determine a high-risk of SO development.
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